I purchased these magnetic data card holders to go with an "In/Out" dry-erase board that we also purchased. I used one magnet for each persons name so that we could keep track of who was going where or what phone extension they had. I purchased these magnets because when I selected the dry-erase board I wanted these came up as a "people who bought this, also purchased this" recommendation. I cut card stock to fit perfectly into the magnet and use..